<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>封装集合类</title>
	</head>
	<body>
		<script src="index.js"></script>
		<script>
			let set = new Set()
			set.add([1, 2, 3])
			// set.add(1)
			// set.add(2)
			// set.add(3)
			// let res = set.remove(3)
			// console.log(res)
			console.log(set)
			// console.log(set.values())
			console.log(set.size())
		</script>
	</body>
</html>
